Check out Wired To Eat by Robb Wolf and consider completing the 7 Day Carb test to see how your body responds to various carbs. Some people have insulin spikes from white rice, others don’t. Some people have insulin spikes from black beans, others don’t. And so on and so forth. The only way to truly identify what works best for you and your body is eliminate certain foods, isolate various carbs during a reintroduction phase, and monitor your blood sugar. It’s all outlined in this book: https://www.amazon.com/dp/0451498569/ref=cm_sw_r_cp_awdb_imm_94R7VP5H2N8SZNHTWJ4F